Model comparison
Gemini 2.0 Flash (Feb 2025) vs Step 3.5 Flash
Step 3.5 Flash is the stronger model overall, scoring 42.3 to 35.1 on the Noometry Index.
Last verified . 17 shared benchmarks.
Google
StepFunSummary
- They share 17 benchmarks with published results for both. Gemini 2.0 Flash (Feb 2025) scores higher in 1 category and Step 3.5 Flash in 7 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in coding, where Step 3.5 Flash leads 42.4 to 28.4.
- Step 3.5 Flash has downloadable open weights; the other is API-only.
Side by side
| Gemini 2.0 Flash (Feb 2025) | Step 3.5 Flash | |
|---|---|---|
| Provider | StepFun | |
| Noometry Index | 35.1 | 42.3 |
| Released | 2024-12-06 | 2026-01-29 |
| Weights | Proprietary | Open |
| Context window | — | 256K |
| Max output | — | 256K |
| Input $ / M tokens | — | $0.10 |
| Output $ / M tokens | — | $0.30 |
| Results tracked | 54 | 19 |
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Category by category
Coding Step 3.5 Flash leads
Gemini 2.0 Flash (Feb 2025): 28.4 (#315), Step 3.5 Flash: 42.4 (#105)
| Benchmark | Gemini 2.0 Flash (Feb 2025) | Step 3.5 Flash |
|---|---|---|
| LMArena Coding | 1350 | 1436 |
| SWE-bench Verified (bash only) | 13.5% | — |
| Aider Polyglot | 38.2% | — |
| WeirdML | 25.8% | — |
| BigCodeBench Instruct | 45.9% | — |
| LiveBench Coding | 63.4% | — |
| BigCodeBench Complete | 59.9% | — |
| CadEval | 30% | — |
Agentic & Tool Use Not comparable
Gemini 2.0 Flash (Feb 2025): 28.1 (#92), Step 3.5 Flash: —
| Benchmark | Gemini 2.0 Flash (Feb 2025) | Step 3.5 Flash |
|---|---|---|
| TheAgentCompany | 11.4% | — |
Reasoning Step 3.5 Flash leads
Gemini 2.0 Flash (Feb 2025): 15.2 (#318), Step 3.5 Flash: 22.2 (#202)
| Benchmark | Gemini 2.0 Flash (Feb 2025) | Step 3.5 Flash |
|---|---|---|
| LMArena Hard Prompts | 1346 | 1411 |
| ARC-AGI-2 | 1.3% | — |
| SimpleBench | 31.1% | — |
| Kagi LLM Benchmark | 37.8% | — |
| NYT Connections (extended) | — | 28.4% |
| EnigmaEval | 1.1% | — |
| LiveBench Reasoning | 78.2% | — |
| DTBench | 63.2% | — |
| LiveBench Data Analysis | 69.4% | — |
| Epoch Capabilities Index | 135.36 | — |
| LiveBench | 66.9% | — |
Math Step 3.5 Flash leads
Gemini 2.0 Flash (Feb 2025): 37.9 (#146), Step 3.5 Flash: 42.6 (#84)
| Benchmark | Gemini 2.0 Flash (Feb 2025) | Step 3.5 Flash |
|---|---|---|
| LMArena Math | 1352 | 1408 |
| MathArena Final-Answer Competitions | — | 66.8% |
| OTIS Mock AIME 2024-2025 | 57.8% | — |
| Omni-MATH | 45.9% | — |
| LiveBench Math | 75.8% | — |
| MATH Level 5 | 82.2% | — |
| FrontierMath (Feb 2025 set) | 1.7% | — |
Knowledge Step 3.5 Flash leads
Gemini 2.0 Flash (Feb 2025): 32.0 (#213), Step 3.5 Flash: 39.6 (#132)
| Benchmark | Gemini 2.0 Flash (Feb 2025) | Step 3.5 Flash |
|---|---|---|
| LMArena Expert | 1339 | 1421 |
| GPQA Diamond | 64.1% | — |
| Humanity's Last Exam | 6.6% | — |
| MMLU-Pro | 73.7% | — |
| Confabulations | 12.4% | — |
| GPQA (HELM) | 55.6% | — |
| MMLU | 79.7% | — |
Multimodal Not comparable
Gemini 2.0 Flash (Feb 2025): 36.5 (#79), Step 3.5 Flash: —
| Benchmark | Gemini 2.0 Flash (Feb 2025) | Step 3.5 Flash |
|---|---|---|
| LMArena Vision | 1158 | — |
| GeoBench | 77% | — |
Multilingual Step 3.5 Flash leads
Gemini 2.0 Flash (Feb 2025): 47.4 (#149), Step 3.5 Flash: 50.5 (#119)
| Benchmark | Gemini 2.0 Flash (Feb 2025) | Step 3.5 Flash |
|---|---|---|
| LMArena Non-English | 1342 | 1385 |
| LMArena Chinese | 1373 | 1447 |
| LMArena French | 1391 | 1421 |
| LMArena German | 1353 | 1405 |
| LMArena Japanese | 1294 | 1354 |
| LMArena Korean | 1313 | 1352 |
| LMArena Russian | 1351 | 1385 |
| LMArena Spanish | 1363 | 1419 |
Instruction Following Gemini 2.0 Flash (Feb 2025) leads
Gemini 2.0 Flash (Feb 2025): 74.4 (#97), Step 3.5 Flash: 73.1 (#124)
| Benchmark | Gemini 2.0 Flash (Feb 2025) | Step 3.5 Flash |
|---|---|---|
| LMArena Instruction Following | 1336 | 1385 |
| LiveBench Instruction Following | 85.8% | — |
| IFEval | 84.1% | — |
Long Context Step 3.5 Flash leads
Gemini 2.0 Flash (Feb 2025): 38.1 (#203), Step 3.5 Flash: 42.8 (#117)
| Benchmark | Gemini 2.0 Flash (Feb 2025) | Step 3.5 Flash |
|---|---|---|
| LMArena Longer Query | 1344 | 1402 |
| Fiction.LiveBench | 61.1% | — |
Writing & Preference Step 3.5 Flash leads
Gemini 2.0 Flash (Feb 2025): 49.5 (#190), Step 3.5 Flash: 58.8 (#113)
| Benchmark | Gemini 2.0 Flash (Feb 2025) | Step 3.5 Flash |
|---|---|---|
| LMArena Text | 1354 | 1403 |
| LMArena Creative Writing | 1340 | 1357 |
| LMArena Multi-Turn | 1350 | 1405 |
| Short-Story Creative Writing | 73.8% | — |
| EQ-Bench Creative Writing | 1128 | — |
| WildBench | 80% | — |
| LiveBench Language | 51.3% | — |
Frequently asked questions
Is Gemini 2.0 Flash (Feb 2025) better than Step 3.5 Flash?
Step 3.5 Flash is the stronger model overall, scoring 42.3 to 35.1 on the Noometry Index.
Is Gemini 2.0 Flash (Feb 2025) or Step 3.5 Flash better for coding?
Step 3.5 Flash scores higher on coding benchmarks: 42.4 versus 28.4 in the Noometry coding category.
How many benchmarks do Gemini 2.0 Flash (Feb 2025) and Step 3.5 Flash share?
17 benchmarks have published results for both models. Gemini 2.0 Flash (Feb 2025) has 54 scored results on Noometry and Step 3.5 Flash has 19.